diff --git a/framework/core/ember/admin/app/styles/app.css b/framework/core/ember/admin/app/styles/app.css
new file mode 100644
index 000000000..65fd7e93e
--- /dev/null
+++ b/framework/core/ember/admin/app/styles/app.css
@@ -0,0 +1,2 @@
+// Flarum styles are stored in the top-level `less` directory. This remains
+// here as a placeholder file to prevent ember-cli from crashing.
diff --git a/framework/core/ember/admin/app/styles/app.less b/framework/core/ember/admin/app/styles/app.less
deleted file mode 100644
index e69de29bb..000000000
diff --git a/framework/core/ember/admin/package.json b/framework/core/ember/admin/package.json
index 118b80b25..5bab82f72 100644
--- a/framework/core/ember/admin/package.json
+++ b/framework/core/ember/admin/package.json
@@ -27,7 +27,6 @@
     "ember-cli-htmlbars": "^0.7.4",
     "ember-cli-ic-ajax": "0.1.1",
     "ember-cli-inject-live-reload": "^1.3.0",
-    "ember-cli-less": "^1.0.5",
     "ember-cli-qunit": "^0.3.8",
     "ember-cli-simple-auth": "^0.7.2",
     "ember-cli-uglify": "1.0.1",
diff --git a/framework/core/ember/forum/app/styles/app.css b/framework/core/ember/forum/app/styles/app.css
new file mode 100644
index 000000000..65fd7e93e
--- /dev/null
+++ b/framework/core/ember/forum/app/styles/app.css
@@ -0,0 +1,2 @@
+// Flarum styles are stored in the top-level `less` directory. This remains
+// here as a placeholder file to prevent ember-cli from crashing.
diff --git a/framework/core/ember/forum/app/styles/app.less b/framework/core/ember/forum/app/styles/app.less
deleted file mode 100644
index e69de29bb..000000000
diff --git a/framework/core/ember/forum/package.json b/framework/core/ember/forum/package.json
index 425bee397..b0ce2f6d0 100644
--- a/framework/core/ember/forum/package.json
+++ b/framework/core/ember/forum/package.json
@@ -27,7 +27,6 @@
     "ember-cli-htmlbars": "^0.7.4",
     "ember-cli-ic-ajax": "0.1.1",
     "ember-cli-inject-live-reload": "^1.3.0",
-    "ember-cli-less": "^1.0.5",
     "ember-cli-qunit": "^0.3.8",
     "ember-cli-simple-auth": "^0.7.2",
     "ember-cli-uglify": "1.0.1",